package com.cdx.springcloud.controller;

import com.cdx.springcloud.entity.CommonResult;
import com.cdx.springcloud.entity.Payment;
import com.cdx.springcloud.lb.LBService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @author chedx
 * @data 2020/12/4 7:58 PM
 */
@RestController
@Slf4j
public class OrderController {
    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVER";
    @Resource
    private RestTemplate restTemplate;
    @Resource
    private DiscoveryClient discoveryClient;
    @Resource
    private LBService loadBalance;

    @GetMapping("/customer/payment/create")
    public CommonResult<Payment> create(Payment payment) {
        return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
    }

    @GetMapping("/customer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id) {
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/"+ id,CommonResult.class);
    }


    @GetMapping("/customer/payment/entity/{id}")
    public CommonResult<Payment> getPaymentEntity(@PathVariable("id") Long id) {
        ResponseEntity<CommonResult> entity= restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        if(entity.getStatusCode().is2xxSuccessful()) {
            return entity.getBody();
        }else {
            return new CommonResult<>(444,"操作失败");
        }
    }

    @GetMapping(value = "/customer/payment/lb")
    public String getLB() {
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVER");
        if(instances == null || instances.size() <= 0) {
            return "无服务";
        }
        ServiceInstance instance = loadBalance.instance(instances);
        URI uri = instance.getUri();
        String result = restTemplate.getForObject(uri + "/payment/lb", String.class);
        return result;
    }


}





